Leather-repairing machine.



F. M. FURBER.

LEATHER REPAIRING MACHINE. APPLICATION FILED HARD!) I91].

Patented Nov. 26, 1918 Zwm STATES PATENT oEEicE.

FREDERICK M. FURBER, OF REVERE, MASSACHUSETTS, ASSIGNOR, BY MESNEASSIGN- MENTS, T0 UNITED SHOE MACHINERY CORPORATION, OF PATERSON, NEWJERSEY,

A CORPORATION OF NEW JERSEY.

LEATHER-REPAIRING MACHINE.

To all whom it may concern.

Be itknown' that I, FREDERICK M. FUR- BER, a citizen of the UnitedStates, residing at Revere, in the county of Sufiolk and State ofMassachusetts, have invented certain Improvements in Leather-RepairingMachines, of which the following descrip tion, in connection with theaccompanying drawings, is a specification, like reference characters onthe drawings indicating like parts in the several figures.

This invention relates to leather treatingfmachines and is shown asembodied in a machine especially designed for repairing imperfections inarticles manufactured of patent or enameled leathers.

I have shown in my Patent No. 1,096,423,

a machine of the type described by means dries upon the cover of thetool and the surface becomes too hard and stiff to be fit for furtheruse, a fresh'portion of this covering material maybe brought intoposition at the will of the operator.

rial has heretofore beensupplied in the form of an en'dles's belt whichwas looped around This strip of matethe tool and held taut by means of aspringpressed roller. As soon as all parts of this belt had been used,it was necessary to reprovide mechanism for a machine of the place thesame, thereby occasioning some loss of time.

The object of this invention 1s, then, -to

type described in which one end of an extended strip of sheet materialis looped around the work surface of the tool and held taut, whichmechanism will be ar- -ran ged automatically to draw a fresh portion ofsheet material into the loop and to withdraw an equal amount of the usedend when the tool is given a positive feeding movement. p n My inventionwill be'more readily under- Specification of Letters Patent. PatentedNOV, 26 1918 Application filed March 1, 1917. Serial No. 151,848.

stood from the following specification taken A casing 10, mounted upon astandard 1'2,

contains mechanism for giving to the tool la an oscillatory work rubbingmovement when power is supplied to the driving pulley 16. An enameldispensing device 18'is' conveniently mounted adjacent the tool and alever 20'provided which, when depressed, at the will of the operator,allows a positive rotative feeding movement of the tool 14 in aclockwise direction in order to bring a fresh portion of the sheetmaterial used as a cover for said tool into operative relation with theactive portion of the surface of the tool. The particular mechanism employed for giving to the tool a work rubbing movement and a positivefeeding movement is immaterial so far as this invention is concerned,one form of such a mechanism being 1 Resilient means such as the spring32 urges V the yoke away from the tool unless restrained by theinsertion of. a pin 34 in a suitable recess in the plunger. This spring32 bears at one end against a collar 36 which may be hel'd'in variouspositions to provide for the adjustment of the tension of the spring.

This yoke may conveniently be used to support the supplystrip of sheetmaterial which is looped around the active portion of the work surfaceof the tool 14 to act as a cover therefor. Preferably the yoke will alsobe used to support a mechanism arranged to control the supply of freshmaterial to said loop and the removal of used material from the loop. Anextended strip of sheet material may be wound in a roll 4'0 around apreferred form of my inspool 38 which is pivoted in the outer end thesupply roll to friotionally oppose its free rotation and keep the stripfrom unwinding unduly. Toothed rolls l6 and 48 are pivotally mountedwithin the yoke 30 and the roll 4:8 is slidable in said yoke and isurged into engagement with the roll 4:6 by means of springs 50. Theincoming supply strip 52 of the material 40 is passed between the rollsd6 and lS and then looped around the peripheral work surface of the tool14, the free end 5+lbeing passed again between said rolls an d clampedin contact with the supply strip by the action of the springs 50.

It will be evident that with the arrange ment described, the freshportion 52 of the.

strip of sheet material is clamped in en merit with the used portionthereof and the loop passing around the tool 14; maintained taut aroundthe roll 46 in such a man ner that any oscillatory work rubbingmovements of the tool let will be shared by the loop. When the tool 14is given a positive rotative feeding movement at the will of theoperator, a fresh portion of the supply end will be drawn into the loopand an equal portion of the used end discarded, there by effectingsimultaneously the discard of a portion of used sheet material and thesupply of an equal portion of fresh material.

Although I have herein shown the preferred embodiment of my invention,it is to be understood that I intend to cover in the appended claims allthose equivalent arrangements which fall within the true scope andspirit of the invention.

Having fully described my invention, what I claim as new and desire tosecure by Letters Patent of the United States is" 1. In a machine of theclass described, a tool having a peripheral work surface, a strip ofsheet material adapted to be used as a cover for said tool, said tooland cover being arranged for work rubbing movement and rotative feedingmovement, and means for holding a portion of said strip of sheetmaterial in a loop around said tool, said loop comprising incoming andoutgoing runs, said means operating also to withdraw from the loop anamount of said strip n aterial equal to the amount of fresh stripmaterial supplied to the loop by the incoming run during the feedingmovement of the tool.

2. In a machine of the class described, a tool having a peripheral worksurface, a supply strip of sheet material. adapted to be looped around.the active portion of the work surface of said tool, the loop thus madecomprising incoming and outgoing runs, said. tool and loop beingarranged for work rubbing movement and for rotative feeding movement tobring a fresh portion of the covered work surface into operativerelation with the work, and a single mechanism arranged to control thesupply of fresh strip material to the loop on the incoming run and thewithdrawal of used strip material from the loop on the outgoing run.

3. In a machine of the class described, a tool having a peripheral worksurface, a supply strip of sheet material adapted to be passed aroundthe active portion of the work surface of said tool in a loop, said loopcomprising incoming and outgoing runs, means for keeping said loop taut,said tool and loop being arranged for work rub bing movement and forrotative feeding movement to bring a fresh portion of the covered worksurface into operative relation with the work, and means for effectingsimultaneously the withdrawal of a portion of used sheet materialfrom'the loop on the outgoing run and the supply of an equal portion offresh material to the loop on the incoming run.

4. In a machine of the type described, a work tool having a peripheralwork surface, a supply strip of sheet material adapted to be wrappedaround the active portion of the work surface of said tool to form asubstan tially closed loop, said loop comprising incoming and outgoingruns, means for keeping said loop taut, said tool and loop beingarranged for work rubbing movement and for positive rotative feedingmovement, and means for maintaining a used portion of said stripmaterial in contact with the incoming run or fresh portion thereof, theconstruction and arrangement being such that used strip material will bewithdrawn from the loop on the outgoing run and fresh strip materialsimultaneously supplied by a feeding movement of the tool.

In a machine of the type described, a tool having a peripheral worksurface, a supply strip of sheet material wound in a roll, means forfriotionally engaging said roll to keep the same from freely unwinding,said tool being arranged for work rubbing movement and for positiverotative feeding movement, a yoke adjacent said tool, toothed rollspivoted in said yoke, means for resiliently pressing said rolls intoengagement to clamp the fresh and used portions of a loop of the sheetmaterial passed between said rolls and wound around the tool, and meansfor urging said yoke away from said tool to maintain said loop taut.

6. In a machine of the type described, a tool having a peripheral worksurface, a supply strip of sheet material adapted to be wrapped aroundthe active portion of the work surface of said. tool to form a closedloop, rotatable means for engaging the inner surface of a portion ofsaid loop, means for urging said rotatable means away from said tool tokeep the loop taut, said tool and loop being arranged for work rubbingmovement and positive rotative feeding movement, and moveable means forengaging the incoming supply strip and the free end of said stripbetween itself and the rotatable means, the construction and arrangementbeing such that said tool and loop may be given an oscillatory workrubbing movement and the loop maintained taut.

7 In a machine of the class described, a tool having a peripheral worksurface, a supply strip of sheet material adapted to be looped aroundthe active portion of the work surface of said tool, said tool and loopbeing arranged for work rubbing movement and for positive rotativefeeding movement, and movable clamping and feeding means engaging theincoming supply strip and the free end of said strip and arranged tocause the feeding movement of the incoming supply strip to withdraw fromthe loop an equal used portion adjacent to the free end of the strip.

8. In a machine of the type described, a

tool having a peripheral work surface, a

supply strip of sheet material, a support adjacent to said tool, rollsmounted on said support, resilient means holding said rolls infrictional engagement, said supply strip being adapted to be passedbetween said rolls around said tool and back between said rolls to forma loop inclosing said tool, and means for urging said support away fromsaid tool to keep said loop taut whereby a rotation of said tool in onedirection will draw in a fresh portion of said strip and therebysimultaneously withdraw from the loop an equal amount of the usedportion of said strip.

9. The combination with a rotary tool arranged for work rubbing movementand for feeding movement, and adapted to receive one end of a loop ofsheet material having a free end, of a pair of feed rollers adapted toreceive between them the incoming run of the loop and the free end ofthe outgoing run, and means for forcing the rollers away from the toolto keep the loop taut, whereby on the feeding movement of the tool aportion of unused sheet material will be supplied thereto and acorresponding portion of used material at the free end of the sheet willbe fed between the rolls to be discarded.

10. The combination with a rotary tool arranged for work rubbingmovement and for feeding movement, and adaptedto receive one end of aloop of sheet material having a free end, of mechanism adapted toreceive the incoming run of the loop and the free end of the outgoingrun and to keep the loop taut, said mechanism being arrangedautomatically to supply a portion of unused sheet material to theincoming run of the loop and to withdraw a corresponding portion of usedmaterial adjacentto the free end of the outgoing run, when the tool isgiven a feeding movement.

11. In a machine of the class described, a tool having a peripheral worksurface, a strip of sheet material adapted to be used as a cover forsaid tool, said tool and cover being arranged for work rubbing movementand rotative feeding movement, and means for holding a portion of saidstrip of sheet material in a loop around said tool constructed andarranged to cause a used free end of the loop to be run offintermittently and fresh strip material correspondingly run into theloop upon successive feeding movements of the tool.

In testimony whereof I have signed my name to this specification.

FREDERICK M. FUR-BER.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents,

' Washington, .D. 0.

